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The MT3608 is a 6-pin SOT23 constant frequency current mode step-up converter designed for low-power applications. The MT3608 operates at 1.2MHz and enables the use of small, low-cost capacitors and inductors with a height of 2mm or less. Internal soft-start reduces inrush current and hence increases battery life.
More specs: https://www.utmel.com/componen....ts/mt3608-2a-step-up